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Metering tools overview
You can use the Metering tools to analyze audio in a variety of ways. These plug-ins oer you
dierent ways to view your audio than the meters shown in channel strips. The Metering plug-ins
have no eect on the audio signal and are intended for use as diagnostic aids.
Each meter is specically designed to view dierent characteristics of an audio signal, making
each suitable for particular studio situations. For example, BPM Counter displays the tempo,
Correlation Meter displays the phase relationship, and Level Meter displays the level of an
incoming audio signal.
BPM Counter
BPM Counter analyzes the tempo of incoming audio in beats per minute (bpm). The detection
circuit looks for any transients, also known as impulses, in the input signal. Transients are very
fast, non-periodic sound events in the attack portion of the signal. The more obvious this impulse
is, the easier it is for BPM Counter to detect the tempo.
Percussive drum and instrumental rhythm parts, such as basslines, are suitable for tempo
analysis, whereas pad sounds are unsuitable candidates for tempo analysis.
The LED shows the current analysis status. If the LED is ashing, a tempo measurement is taking
place. When the LED is continuously lit, analysis is complete, and the tempo is displayed. The
measurement ranges from 80 to 160 beats per minute. The measured value is displayed with an
accuracy of one decimal place. Click the LED to reset BPM Counter.
Note: BPM Counter also detects tempo variations in the signal and tries to analyze them
accurately. If the LED starts ashing during playback, this indicates that BPM Counter has
detected a tempo that has deviated from the last received (or set) tempo. As soon as a new,
constant tempo is recognized, the LED is solidly lit and the new tempo displayed.
Metering tools
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